F class restricted chambers ???

[rpollock]

Tight necked BR chambers make it so you must turn the neck because the chamber dictates. I can see where the BR crowd are now disputing light vs heavy neck turning. Are thin or thicker concentric necks more accurate?

Probably close to a toss up in terms of pure accuracy potential.

The real benefit is in the neck turning. One pass of the cutter instead of two, if you use the light turn necks. This is a real savings!